A cardinal númber is a number that says how many of something there are such a one , two , three , four , five
30 km/h * 17 h = 30*17 km/h *h
= 510 km
A transfer of charge is actually a gross movement of electrons. Charged objects have a normal or "balanced" state. This state is balanced in a sense of positive charges (protons) and negative charges (electrons). When an object has an excess of deficiency of electrons, it will try to regain its balance by releasing or accepting electrons.